Dry battery



S. YAI.

DRY BATTERY.

APPLICATION FILED JAN. 30, 1919.

1 ,328,027, Patented Jan. 13, 1920.

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SAKIZO, or TOKYO, JAPAN.

DRY BATTERY.

Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed January 30, 1919. Serial No. 274,070.

To all whom it may concern:

Be it known that I, SAKIZO YAI, a subject of the Em eror of Japan, and,a resident of No. 2, 1- home, Nishiki-Cho, Kanda-Ku, city of Tokyo,Empire of Japan, have invented new and useful Improvements in DryBatteries, of which the following is a speci-' fica'tion.

This invention relates to improvements in electric batteries of the drycell type, and relates, more particularly to the means of providing atight joint between the inner Wall of the outer casing and the gunmaterial with which the open end of the outer casing is to be closed.

The invention consists in the construction,

' combination and arrangement of devices 80 The seal of gum material,preferably ashereinafter shown and described.

The accompanying drawing is an elevation, partly in vertical centralsection, of a dry battery constructed and arranged in accordance with myinvention.

The outer casing 1 contains the mixture 2 of carbon and hydrogenabsorbin material, such for in stance, as a mixture 0 graphite andmanganese peroxid. The lining 3 is ofmaterial which is adapted toabsorbliquid and the negative plate 4 is placed within the black mixture2.

phalt, which closes the open end of the outer casing is in accordancewith my invention, formed with a circumferential flange 5 which extendstherebeyond. The wall of the container is bent against the under andperipheral sides of the said flange 5, as at 6 and is also bent inwardlyagainst the upper side of the seal to partially overlap the same, asshown. Such construction forms a groove in the diametrically enlargedopen end portion of the said container wall and in which groove theflange of the seal is contained so that a tight joint is formed betweenthe seal and the container wall. 7

Having thus described myinvention, I'

claim In a dry battery, a container, a mix there- In testimon whereof Iaflix my signature in presence 0 .two witnesses.

F SAKIZO YAI.

Witnesses:

H. Yssommm,

M. Orson.

